Purple potato contains rich dietary fiber, starch, vitamins, trace elements( selenium, iron, calcium, potassium, etc), which has the functions of being antioxidant, being antitumor, improving memory, protecting hypertension, repairing myocardium and enhancing body immunity. White fungus is a traditional edible fungus in China, and it has always been a favorite food for most people. It is usually used as the main ingredient in various dishes. Its active ingredient, white fungus polysaccharide, has special health care function.